U.S. patent number 4,567,907 [Application Number 06/624,753] was granted by the patent office on 1986-02-04 for umbrella having easily operated pulley means for opening and closing the same.
Invention is credited to Emanuel Dubinsky.
United States Patent |
4,567,907 |
Dubinsky |
February 4, 1986 |
Umbrella having easily operated pulley means for opening and
closing the same
Abstract
A pulley system for opening and closing an umbrella which has a
ribholder adapted for slidable movement along an umbrella pole. A
pulley wheel is mounted in the umbrella pole below its top portion
with one end of a pulley cord fixedly attached to the ribholder
while the other end of the pulley cord extends below the closed
umbrella cover with a first cord handle adapted for being grasped
by an operator. The first cord handle has a locking pin adapted for
insertion into a hole in the umbrella pole for stopping the
downward travel of the ribholder and supporting the umbrella in its
open position. A second cord handle is secured to the pulley cord
at a predetermined distance from the first handle such that the
second handle can be readily grasped and pulled further downward
for raising the ribholder to permit the locking pin to be inserted
into the hole for locking the umbrella in its open position.
Inventors: |
Dubinsky; Emanuel (Chappaqua,
NY) |
Family
ID: |
24503187 |
Appl.
No.: |
06/624,753 |
Filed: |
June 26, 1984 |
Current U.S.
Class: |
135/20.3; 135/28;
135/38 |
Current CPC
Class: |
A45B
23/00 (20130101); A45B 25/14 (20130101); A45B
2200/1063 (20130101); A45B 2023/0012 (20130101) |
Current International
Class: |
A45B
25/00 (20060101); A45B 23/00 (20060101); A45B
25/14 (20060101); A45B 011/00 (); A45B 025/06 ();
A45B 025/08 () |
Field of
Search: |
;135/2R,2M,27,28,30,37,38,39,41,903,905,42,16 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Bagwill; Robert E.
Assistant Examiner: Muir; D. Neal
Attorney, Agent or Firm: Young; Philip
Claims
What is claimed is:
1. A pulley system for opening and closing an umbrella which has an
umbrella pole, a cover, frame support ribs and a ribholder adapted
for slidable movement along said umbrella pole, comprising a pulley
wheel mounted in said umbrella pole below its top portion, a pulley
cord having one end fixedly attached to said umbrella ribholder,
such pulley cord extending operatively around said pulley wheel and
downward by a predetermined length to its free hanging end which
extends below said umbrella cover and is easily accessible when
said umbrella is closed, a lower first handle secured near said
free end of said cord and adapted for being grasped by an operator,
said first handle including a long pin adapted for being inserted
in a hole located in said umbrella pole for stopping the downward
travel of said ribholder for supporting said umbrella in its open
position, an upper second handle secured to said cord at a
predetermined higher distance from said first handle such that said
second handle is accessible and visible when said first handle has
been pulled down to open said umbrella to an intermediate position
whereby said second handle can be readily grasped and pulled
further downward for raising said ribholder above said hole in said
pole, said second handle being used to maintain said rib holder
above said hold while the pin on the first handle may be inserted
into the hole for locking the umbrella into its open position.
2. A pulley system as recited in claim 1, wherein said pulley wheel
is mounted in said umbrella pole by means of a cylindrical tube of
rigid support material fixedly mounted in said umbrella pole with
an opening for receiving said pulley wheel and said cord.
3. A pulley system as recited in claim 2, wherein said cylindrical
tube is made of aluminum and said umbrella pole is made of
wood.
4. A pulley system as recited in claim 1, wherein said first handle
is secured to said cord at a distance of about 24 inches from said
second handle to permit said first handle to reach said pole hole
for insertion of said pin therein while said second handle is
held.
5. A pulley system as recited in claim 1, wherein said pulley cord
extends along the outside of said pole from said umbrella ribholder
to said pulley wheel and down to where it terminates at said first
handle at a height below the bottom edge of said cover in the
closed umbrella position.
Description
TECHNICAL FIELD
The present invention relates to umbrellas and more particularly to
the mechanism for opening and closing umbrellas.
BACKGROUND ART
Umbrellas that are made for awning type of use are generally large
in size and, as a consequence, may be built with special systems
for opening and closing such umbrellas. These systems presently
used are generally of the pulley type or the spring type of system.
In the pulley and cord system presently known for use with
umbrellas a double pulley wheel arrangement is mounted at the top
of the umbrella pole and attached at one end to the ribholder for
lifting the ribs during opening, while the other end of the rope
either freely extends on the outside of the umbrella pole with a
pin used for supporting and locking the ribholder at a designated
position on the pole where the pin extends through a small hole in
the pole. Alternately, the pulley rope can be connected either
internally through the inside of a hollow pole or externally near
the bottom of the pole to a hand crank mechanism which controls the
rope and, consequently, the opening and closing of the umbrella. In
some of these type of pulley systems, a tongue type of spring is
mounted near the top of the pole at a position where the spring
extends outside of the pole for locking the rib holder at the
designated height so that it does not slide below the spring
position. Also, pressure springs are employed in the hand cranks
for preventing the handle from going backwards and thereby locking
the position of the umbrella in a ratchet-like manner.
In the pulley systems employing hand cranks, the crank mechanism
and spring associated therewith are often subject to breakdown and
involve relatively expensive manufacturing for the mechanism. Also,
the pulley and cord system used in such umbrellas is complicated
and, where hand cranks are not employed such pulley systems require
that the operator raps the cord around his hand and then looks for
the locking pin for insertion into the hole in the pole. This is
cumbersome and a difficult manipulation for some users.
SUMMARY OF THE INVENTION
In view of the above, it is an object of the present invention to
provide a pulley system for an umbrella which facilitates the
opening and closing of such umbrella and is not cumbersome to
operate. It is another object of the present invention to provide a
pulley system for operating an umbrella which is not complex and
requires a minimum number of parts. It is another object of the
present invention to provide a means for operating a large umbrella
which does not require the use of hand cranks, gears, springs or a
double pulley system which are complex and expensive.
These and other objects are achieved by the present invention which
provides a pulley system for opening and closing an umbrella,
including a pulley wheel mounted in the umbrella pole below the top
portion thereof, a pulley cord having one end attached to the
umbrella ribholder that slides along the umbrella pole, such pulley
rope extending operatively around the pulley wheel and having an
overall length which is greater then the length of the umbrella so
that the other end of the pulley cord is accessible when the
umbrella is closed, a first handle secured near the free end of the
cord and adapted for being grasped by the operator, said first
handle including a long pin adapted for being inserted in the hole
located in the umbrella pole for stopping the downward travel of
the ribholder along the pole when the pin is inserted in such hole,
a second handle secured to the cord at a predetermined distance
from the first handle such that such second handle is accessible
and visible when the first handle has been pulled down to open the
umbrella to a first position whereby the second handle can be
readily grasped by the same hand and pulled downward for raising
the runner notch of the ribholder until it is above the hole in the
pole, at which time the pin in the first handle is inserted into
the hole for locking the umbrella into its open position.
The cord length is such that when the umbrella is closed, the first
handle protrudes at the edge of the bottom of the umbrella cover so
as to be visible and accessible. The umbrella can be opened with
one hand by pulling on the first handle and easily opening the
umbrella until the second handle is accessible. While holding the
first handle, the second handle can be grasped with the other hand
and pulled such that the umbrella is brought to its fully open
position with the runner notch on the ribholder raised just
slightly above the pole hole. While holding the second handle, the
second handle with the pin is now completely loose and free of any
stress, thereby allowing easy placement of the pin into the hole
for locking the umbrella in a secure open position. The umbrella
can be closed by simply pulling on the second handle to raise the
umbrella runner notch a slight amount to remove the pressure from
the pin whereby such pin is removed from the hole and the second
handle can be raised to close the umbrella a first amount, after
which the first handle is grasped and the umbrella lowered to its
fully closed position.
In this fashion the umbrella pulley system of the present invention
is both simple in structure and easy to operate and avoids the
conventional complex external pulley systems and spring and crank
umbrella systems presently known.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view showing the pulley system incorporated
in an umbrella, illustrative of the present invention;
FIG. 2.1 is a close-up view of the pulley system showing the
handles and locking pin used in the system shown in FIG. 1; and
FIG. 2.2 shows the pulley wheel;
FIGS. 3.1, 3.2 and 3.3 respectively show the umbrella and pulley
system in the closed position, the intermediate position and the
open position with the accessiblity of each of the cord handles
illustrated in such positions .
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIG. 1 there is shown a pulley system incorporated
into a table umbrella 10 having a canopy 12 and a frame including
ribs 14, support ribs 16, and a ribholder, also referred to as a
runner notch 18. The runner notch supports the ribs 16 which are
pivotly connected thereto, and such ribholder 18 is adapted to
slide along the pole 20. As shown, the umbrella pole 20 extends
through the top of a table 22 and is supported at its lower end by
a base member 24. A pulley wheel 26 is incorporated in the pole 20
by means of its being mounted by a shaft 28 on an aluminum tube 30
which is mounted in a section at the top of pole 20 in rigid
fashion such that the structural integraty of the pole is
maintained. The upper and lower ends of the tube 30 can be press
fitted onto the pole 20 and further joined by rivits 32 or other
suitable fastening means.
A pulley cord 34 made, for example, of a high strength nylon, has
one end 36 fixed or tied onto the ribholder 18, and such cord 34
extends around the pulley wheel 26 with its free end being attached
to a handle 38. Handle 38 is securely attached to cord 34 and
includes a locking pin 40, the use of which will be disclosed in
detail below. A second handle 42 is fixedly secured to the cord 34
at a predetermined "Y" distance, for example 24 inches, from the
free end of cord 34 having the handle 38 attached thereto. Handles
38 and 42 are made of wood although other materials such as plastic
and metal can be suitably employed.
As shown in FIG. 1, a hole 44 is provided in the pole at a position
which locks the umbrella in its fully open position by means of the
locking pin 40 being inserted through hole 44.
FIG. 2 shows a detailed view of the pulley assembly including a
more close up view of the handle 38 and locking pin 40, the second
handle 42, the pulley wheel 26 and the tube 30 mounted with the
pulley wheel 26 within the pole 20. FIG. 2 consists of FIGS. 2.1
and 2.2.
The length of cord 34 and the position of the first handle 38 and
the location of the second handle 42 at a predetermined distance
from handle 38 is more clearly illustrated in the FIGS. 3.1, 3.2
and 3.3. Here, in FIG. 3.1, the umbrella is shown in the closed
position with the handle 38 protruding and visible at the edge of
the bottom of the umbrella cover 12. In order to open the umbrella,
handle 38 is pulled with one hand such that the umbrella easily
opens, approximately 15 inches, to an intermediate position whereby
the second handle 42 is accessible as shown in FIG. 3.2. While
holding the first handle 38, the user then will grasp the second
handle 42 with the other hand. In this fashion, the semi-open
position of the umbrella shown in FIG. 3.2 now provides the needed
leverage for easily pulling on the second handle 42 to raise the
umbrella from such semi-open position into its completely open
position, whereby the ribholder slide 18 is raised just above the
hole 44 in the umbrella pole. At this point, the user is holding
the handle 42 while the first handle 38 having locking pin 40 is
completely loose and free of any stress, thereby allowing for easy
placement of pin 40 into the hole 44. The umbrella is now in a well
secured open position.
In order to close the umbrella, the second handle 42 is grasped and
pulled to raise the umbrella runner slide 18 enough to relieve the
pressure on pin 40 so such pin 40 can be pulled out of hole 44. At
this point, the upper portion of the pulley cord 34 is taut since
with the lower portion of cord 34 hanging lose, handle 38 and
locking pin is pulled out of the hole with minimum effort and
handle 38 is used to lower the umbrella from its semi-open position
to its completely closed position in an easy and safe manner.
While the invention has been described above with respect to its
preferred embodiments, it should be understood thet other forms and
embodiments may be made without departing from the spirit and scope
of the present invention.
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